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Oh no... WD45 hydraulic pump making some bad noise
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Glockhead SWMI View Drop Down
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Joined: 12 Sep 2009
Location: South West Mich
Points: 2657 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Glockhead SWMI Quote  Post ReplyReply Direct Link To This Post Topic: Oh no... WD45 hydraulic pump making some bad noise
    Posted: 20 Mar 2010 at 10:22am
I jumped on the WD last night to grade the driveway. When I lifted the blade the pump was making some horrible noises. I have a big list of things to fix on this unit. Are the pumps servicable or would it be better to start looking for a suitable replacement?
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CTuckerNWIL View Drop Down
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Joined: 11 Sep 2009
Location: NW Illinois
Points: 22823 		Post Options Post Options   Thanks (0) Thanks(0)   Quote CTuckerNWIL Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2010 at 10:30am
The pumps can be rebuilt. There are o-rings and check valves consisting of a seat, ball and spring. Not much else to fix. My bypass spool broke a few years ago and I had to replace it(part from AGCO). Maybe your bypass spool is hanging up and not unloading. Could be just needs a cleaning.

Edited by CTuckerNWIL - 20 Mar 2010 at 10:30am
http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
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Glockhead SWMI View Drop Down
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Joined: 12 Sep 2009
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Points: 2657 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Glockhead SWMI Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2010 at 10:53am
Hmmm.... this thing did have some of the nastiest fluids in it I have ever saw. It sounds really bad.
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Max(ia) View Drop Down
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Joined: 15 Sep 2009
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Points: 536 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Max(ia) Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2010 at 12:54pm
Just a thought, did you return the hyd. lever to neutral after you lifted the blade, if not could be the pump running.
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LouSWPA View Drop Down
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Joined: 11 Sep 2009
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Points: 24365 		Post Options Post Options   Thanks (0) Thanks(0)   Quote LouSWPA Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2010 at 1:21pm
Jesse,
I've had two of them (WD/WD-45) where the noise was the result of a worn/broken cam follower(s) that also chewed up the cam shaft! If that is your problem, and the cam shaft is not too bad it's easy to fix. If the cam shaft is beyond use it's a big problem.
But, the noise can be lots of other things, too
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gary ny View Drop Down
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Joined: 11 Sep 2009
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Points: 361 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gary ny Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2010 at 1:36pm
Lou is right the cam followers brake and they will make a real bad noise ,easy fix though
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Duey (IA) View Drop Down
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Joined: 11 Sep 2009
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Points: 252 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Duey (IA) Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2010 at 3:34pm
I have a blow up of the parts and some tips on the pump on my web site.

http://dueyschutter.freeservers.com/photo3.html
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Glockhead SWMI View Drop Down
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Joined: 12 Sep 2009
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Points: 2657 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Glockhead SWMI Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2010 at 10:00pm
How would the engine make noise only when I have an implement attached and the hydraulics in the up position? Not sure I understand what you are talking about.
 
I have the new engine on the stand almost ready to get rebuilt. That should take care of any problems there.
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LouSWPA View Drop Down
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Points: 24365 		Post Options Post Options   Thanks (0) Thanks(0)   Quote LouSWPA Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2010 at 10:10pm
Originally posted by Glockhead SWMI Glockhead SWMI wrote:

How would the engine make noise only when I have an implement attached and the hydraulics in the up position? Not sure I understand what you are talking about.
 
I have the new engine on the stand almost ready to get rebuilt. That should take care of any problems there.
Jesse,
The hydraulic pump is four pistons, actuated by cam followers which are actuated by a cam shaft that runs from the engine clutch to the transmission. That's the cams and followers I am talking about. Not the the engine cam.
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NICKMI View Drop Down
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Joined: 15 Sep 2009
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Points: 534 		Post Options Post Options   Thanks (0) Thanks(0)   Quote NICKMI Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2010 at 10:51pm
ive got a good pump on a junker wd out back if your interested
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Glockhead SWMI View Drop Down
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Joined: 12 Sep 2009
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Points: 2657 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Glockhead SWMI Quote  Post ReplyReply Direct Link To This Post Posted: 21 Mar 2010 at 9:11am
Lou, OK. I thought ya lost your marbles for a minute. I forgot about the cam followers in the pump. I heard cam and thought of the engine.
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LouSWPA View Drop Down
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Joined: 11 Sep 2009
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Points: 24365 		Post Options Post Options   Thanks (0) Thanks(0)   Quote LouSWPA Quote  Post ReplyReply Direct Link To This Post Posted: 22 Mar 2010 at 12:10am
Originally posted by Glockhead SWMI Glockhead SWMI wrote:

Lou, OK. I thought ya lost your marbles for a minute. I forgot about the cam followers in the pump. I heard cam and thought of the engine.
HeHeHe,  many have came to the same conclusion!
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John Ontario View Drop Down
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Joined: 22 Mar 2010
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Points: 10 		Post Options Post Options   Thanks (0) Thanks(0)   Quote John Ontario Quote  Post ReplyReply Direct Link To This Post Posted: 22 Mar 2010 at 7:00pm
Is there somewhere that you can buy a kit to rebuild the pump? The pump on my 45 leaks in the raised position. Schematics would be great as well.
Thanks John
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Chuck(ONT) View Drop Down
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Joined: 11 Sep 2009
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Points: 1055 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Chuck(ONT) Quote  Post ReplyReply Direct Link To This Post Posted: 22 Mar 2010 at 7:04pm
http://dueyschutter.freeservers.com/photo3.html
scroll down for a schematic.  Agco still carries a kit, around  100.00.
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